i=12
j=2(dos)
j=4(windows)
Type: Posts; User: shasi1986; Keyword(s):
i=12
j=2(dos)
j=4(windows)
primary key is combination of both unique and notnull keys.
unique key is a key which is not accept any duplication.
foriegn key is a key which is act as a primary key to some other table.